I would like to revive the Ada support in gentoo. One ada compiler is produced by AdaCore and is provided in three versions, in the order starting from the best supported :
1) GnatPro, available with a contract support. 2) Gnat-GPL that can only build GPL-3 product 3) The gnat included in the gcc tree that is GPL-3 with exception. Gnat-GPL is very like the gnat in the gcc-tree so it can be built in the same way of sys-devel/gcc To be compiled from source the gcc compiler needs a C, C++, and Ada Compiler. I will provide one with the gnat-gpl-bin tar that could be installed under /opt . When the gcc is properly compiled we don't need it any more. I would like to start including, in the gentoo tree, GNAT-GPL built in the same way as sys-devel-gcc and selectable with gcc-config As for instance gnat-gpl-2014 is based on gcc-4.7.4 they cannot coexist and gnat-gpl-2014 will block sys-devel/gcc-4.7.4 As a reference I have my overlay on https://github.com/atupone/overlay and a pull request at https://github.com/gentoo/gentoo/pull/3186 To start I need to change the toolchain.eclass - tc_version_is_at_least 4.7 && IUSE+=" go" + tc_version_is_at_least 4.7 && IUSE+=" go ada" - # We do NOT want 'ADA support' in here! - # is_ada && GCC_LANG+=",ada" + # We do want 'ADA support' here! + is_ada && GCC_LANG+=",ada" - for x in cpp gcc g++ c++ gcov g77 gcj gcjh gfortran gccgo ; do + for x in cpp gcc g++ c++ gcov g77 gcj gcjh gfortran gccgo gnatbind; do Thats all for that. Then, to not change the behaviour of the gcc-compiler, we could mask the ada use flag for sys-devel/gcc, at least temporarily --------------------- I would like to have comments on that, particularly because: a) it is going to add a use flag to sys-devel/gcc that will bring gcc to be rebuilt on most system, b) the gnat-gpl, if selected with gcc-config, can be used to recompile all the system, and maybe is not so good ? Alfredo
